Built a stereo pair of DIY Linkwitz Labs Phoenix (Alt) open-baffle subwoofers to mate with LXmini mains. ’Alt’ means using Tymphany Peerless XLS 83500 (Denmark) drivers instead of the 4 original-spec 12" drivers. Now the bass is as articulate and transparent as the LXmini - perfect pairing.
Also incorperated a pair of Hypex FA-series plate amps into each of those subs, so now the active crossover/DSP functions and Ncore amplification for the entire system is all handled at the subs. This means that (other than mechanical sources: CD and phono) there is only one piece of gear needed (streamer/preamp) - essentially downsized and uncomplicated like a ’lifestyle’ system.
The streamer/preamp could be anything, and I’ve tried several options; Node, NAD M12, and currently using C658 (to play with Dirac). Might try a Lyngdorf or miniDSP Studio or Pi w/hat in the future.